hh->hh_output = neigh->ops->hh_output;
}
-static void neigh_periodic_timer(unsigned long arg)
+static void neigh_periodic_work(struct work_struct *work)
{
- struct neigh_table *tbl = (struct neigh_table *)arg;
+ struct neigh_table *tbl = container_of(work, struct neigh_table, gc_work.work);
struct neighbour *n, **np;
- unsigned long expire, now = jiffies;
+ unsigned int i;
NEIGH_CACHE_STAT_INC(tbl, periodic_gc_runs);
- write_lock(&tbl->lock);
+ write_lock_bh(&tbl->lock);
/*
* periodically recompute ReachableTime from random function
*/
- if (time_after(now, tbl->last_rand + 300 * HZ)) {
+ if (time_after(jiffies, tbl->last_rand + 300 * HZ)) {
struct neigh_parms *p;
- tbl->last_rand = now;
+ tbl->last_rand = jiffies;
for (p = &tbl->parms; p; p = p->next)
p->reachable_time =
neigh_rand_reach_time(p->base_reachable_time);
}
- np = &tbl->hash_buckets[tbl->hash_chain_gc];
- tbl->hash_chain_gc = ((tbl->hash_chain_gc + 1) & tbl->hash_mask);
+ for (i = 0 ; i <= tbl->hash_mask; i++) {
+ np = &tbl->hash_buckets[i];
- while ((n = *np) != NULL) {
- unsigned int state;
+ while ((n = *np) != NULL) {
+ unsigned int state;
- write_lock(&n->lock);
+ write_lock(&n->lock);
- state = n->nud_state;
- if (state & (NUD_PERMANENT | NUD_IN_TIMER)) {
- write_unlock(&n->lock);
- goto next_elt;
- }
+ state = n->nud_state;
+ if (state & (NUD_PERMANENT | NUD_IN_TIMER)) {
+ write_unlock(&n->lock);
+ goto next_elt;
+ }
- if (time_before(n->used, n->confirmed))
- n->used = n->confirmed;
+ if (time_before(n->used, n->confirmed))
+ n->used = n->confirmed;
- if (atomic_read(&n->refcnt) == 1 &&
- (state == NUD_FAILED ||
- time_after(now, n->used + n->parms->gc_staletime))) {
- *np = n->next;
- n->dead = 1;
+ if (atomic_read(&n->refcnt) == 1 &&
+ (state == NUD_FAILED ||
+ time_after(jiffies, n->used + n->parms->gc_staletime))) {
+ *np = n->next;
+ n->dead = 1;
+ write_unlock(&n->lock);
+ neigh_cleanup_and_release(n);
+ continue;
+ }
write_unlock(&n->lock);
- neigh_cleanup_and_release(n);
- continue;
- }
- write_unlock(&n->lock);
next_elt:
- np = &n->next;
+ np = &n->next;
+ }
+ /*
+ * It's fine to release lock here, even if hash table
+ * grows while we are preempted.
+ */
+ write_unlock_bh(&tbl->lock);
+ cond_resched();
+ write_lock_bh(&tbl->lock);
}
-
/* Cycle through all hash buckets every base_reachable_time/2 ticks.
* ARP entry timeouts range from 1/2 base_reachable_time to 3/2
* base_reachable_time.
*/
- expire = tbl->parms.base_reachable_time >> 1;
- expire /= (tbl->hash_mask + 1);
- if (!expire)
- expire = 1;
-
- if (expire>HZ)
- mod_timer(&tbl->gc_timer, round_jiffies(now + expire));
- else
- mod_timer(&tbl->gc_timer, now + expire);
-
- write_unlock(&tbl->lock);
+ schedule_delayed_work(&tbl->gc_work,
+ tbl->parms.base_reachable_time >> 1);
+ write_unlock_bh(&tbl->lock);
}
static __inline__ int neigh_max_probes(struct neighbour *n)
get_random_bytes(&tbl->hash_rnd, sizeof(tbl->hash_rnd));
rwlock_init(&tbl->lock);
- setup_timer(&tbl->gc_timer, neigh_periodic_timer, (unsigned long)tbl);
- tbl->gc_timer.expires = now + 1;
- add_timer(&tbl->gc_timer);
-
+ INIT_DELAYED_WORK_DEFERRABLE(&tbl->gc_work, neigh_periodic_work);
+ schedule_delayed_work(&tbl->gc_work, tbl->parms.reachable_time);
setup_timer(&tbl->proxy_timer, neigh_proxy_process, (unsigned long)tbl);
skb_queue_head_init_class(&tbl->proxy_queue,
&neigh_table_proxy_queue_class);
struct neigh_table **tp;
/* It is not clean... Fix it to unload IPv6 module safely */
- del_timer_sync(&tbl->gc_timer);
+ cancel_delayed_work(&tbl->gc_work);
+ flush_scheduled_work();
del_timer_sync(&tbl->proxy_timer);
pneigh_queue_purge(&tbl->proxy_queue);
neigh_ifdown(tbl, NULL);
.ndtc_last_rand = jiffies_to_msecs(rand_delta),
.ndtc_hash_rnd = tbl->hash_rnd,
.ndtc_hash_mask = tbl->hash_mask,
- .ndtc_hash_chain_gc = tbl->hash_chain_gc,
.ndtc_proxy_qlen = tbl->proxy_queue.qlen,
};
if (h > s_h)
s_idx = 0;
for (n = tbl->hash_buckets[h], idx = 0; n; n = n->next) {
- if (dev_net(n->dev) != net)
+ if (!net_eq(dev_net(n->dev), net))
continue;
if (idx < s_idx)
goto next;
static void *neigh_stat_seq_start(struct seq_file *seq, loff_t *pos)
{
- struct proc_dir_entry *pde = seq->private;
- struct neigh_table *tbl = pde->data;
+ struct neigh_table *tbl = seq->private;
int cpu;
if (*pos == 0)
static void *neigh_stat_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
- struct proc_dir_entry *pde = seq->private;
- struct neigh_table *tbl = pde->data;
+ struct neigh_table *tbl = seq->private;
int cpu;
for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
static int neigh_stat_seq_show(struct seq_file *seq, void *v)
{
- struct proc_dir_entry *pde = seq->private;
- struct neigh_table *tbl = pde->data;
+ struct neigh_table *tbl = seq->private;
struct neigh_statistics *st = v;
if (v == SEQ_START_TOKEN) {
if (!ret) {
struct seq_file *sf = file->private_data;
- sf->private = PDE(inode);
+ sf->private = PDE(inode)->data;
}
return ret;
};
} neigh_sysctl_template __read_mostly = {
.neigh_vars = {
{
- .ctl_name = NET_NEIGH_MCAST_SOLICIT,
.procname = "mcast_solicit",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NEIGH_UCAST_SOLICIT,
.procname = "ucast_solicit",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NEIGH_APP_SOLICIT,
.procname = "app_solicit",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_userhz_jiffies,
},
{
- .ctl_name = NET_NEIGH_REACHABLE_TIME,
.procname = "base_reachable_time",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
- .strategy = sysctl_jiffies,
},
{
- .ctl_name = NET_NEIGH_DELAY_PROBE_TIME,
.procname = "delay_first_probe_time",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
- .strategy = sysctl_jiffies,
},
{
- .ctl_name = NET_NEIGH_GC_STALE_TIME,
.procname = "gc_stale_time",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
- .strategy = sysctl_jiffies,
},
{
- .ctl_name = NET_NEIGH_UNRES_QLEN,
.procname = "unres_qlen",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NEIGH_PROXY_QLEN,
.procname = "proxy_qlen",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_userhz_jiffies,
},
{
- .ctl_name = NET_NEIGH_RETRANS_TIME_MS,
.procname = "retrans_time_ms",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_ms_jiffies,
- .strategy = sysctl_ms_jiffies,
},
{
- .ctl_name = NET_NEIGH_REACHABLE_TIME_MS,
.procname = "base_reachable_time_ms",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_ms_jiffies,
- .strategy = sysctl_ms_jiffies,
},
{
- .ctl_name = NET_NEIGH_GC_INTERVAL,
.procname = "gc_interval",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
- .strategy = sysctl_jiffies,
},
{
- .ctl_name = NET_NEIGH_GC_THRESH1,
.procname = "gc_thresh1",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NEIGH_GC_THRESH2,
.procname = "gc_thresh2",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_NEIGH_GC_THRESH3,
.procname = "gc_thresh3",
.maxlen = sizeof(int),
.mode = 0644,
int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
int p_id, int pdev_id, char *p_name,
- proc_handler *handler, ctl_handler *strategy)
+ proc_handler *handler)
{
struct neigh_sysctl_table *t;
const char *dev_name_source = NULL;
#define NEIGH_CTL_PATH_DEV 3
struct ctl_path neigh_path[] = {
- { .procname = "net", .ctl_name = CTL_NET, },
- { .procname = "proto", .ctl_name = 0, },
- { .procname = "neigh", .ctl_name = 0, },
- { .procname = "default", .ctl_name = NET_PROTO_CONF_DEFAULT, },
+ { .procname = "net", },
+ { .procname = "proto", },
+ { .procname = "neigh", },
+ { .procname = "default", },
{ },
};
if (dev) {
dev_name_source = dev->name;
- neigh_path[NEIGH_CTL_PATH_DEV].ctl_name = dev->ifindex;
/* Terminate the table early */
memset(&t->neigh_vars[14], 0, sizeof(t->neigh_vars[14]));
} else {
}
- if (handler || strategy) {
+ if (handler) {
/* RetransTime */
t->neigh_vars[3].proc_handler = handler;
- t->neigh_vars[3].strategy = strategy;
t->neigh_vars[3].extra1 = dev;
- if (!strategy)
- t->neigh_vars[3].ctl_name = CTL_UNNUMBERED;
/* ReachableTime */
t->neigh_vars[4].proc_handler = handler;
- t->neigh_vars[4].strategy = strategy;
t->neigh_vars[4].extra1 = dev;
- if (!strategy)
- t->neigh_vars[4].ctl_name = CTL_UNNUMBERED;
/* RetransTime (in milliseconds)*/
t->neigh_vars[12].proc_handler = handler;
- t->neigh_vars[12].strategy = strategy;
t->neigh_vars[12].extra1 = dev;
- if (!strategy)
- t->neigh_vars[12].ctl_name = CTL_UNNUMBERED;
/* ReachableTime (in milliseconds) */
t->neigh_vars[13].proc_handler = handler;
- t->neigh_vars[13].strategy = strategy;
t->neigh_vars[13].extra1 = dev;
- if (!strategy)
- t->neigh_vars[13].ctl_name = CTL_UNNUMBERED;
}
t->dev_name = kstrdup(dev_name_source, GFP_KERNEL);
goto free;
neigh_path[NEIGH_CTL_PATH_DEV].procname = t->dev_name;
- neigh_path[NEIGH_CTL_PATH_NEIGH].ctl_name = pdev_id;
neigh_path[NEIGH_CTL_PATH_PROTO].procname = p_name;
- neigh_path[NEIGH_CTL_PATH_PROTO].ctl_name = p_id;
t->sysctl_header =
register_net_sysctl_table(neigh_parms_net(p), neigh_path, t->neigh_vars);